On Tue, Oct 08, 2019 at 06:11:44PM +0800, Cheng-Yi Chiang wrote:
> Add an interface for other driver to query VPD value.
> This will be used for ASoC machine driver to query calibration
> data stored in VPD for smart amplifier speaker resistor
> calibration.
>
> The example usage in ASoC machine driver is like:
>
> #define DSM_CALIB_KEY "dsm_calib"
> static int load_calibration_data(struct cml_card_private *ctx) {
> char *data = NULL;
> int ret;
> u32 value_len;
>
> /* Read calibration data from VPD. */
> ret = vpd_attribute_read(1, DSM_CALIB_KEY,
> (u8 **)&data, &value_len);
>
> /* Parsing of this string...*/
> }
>
>
> Signed-off-by: Cheng-Yi Chiang <cychiang@xxxxxxxxxxxx>
> ---
I can't take this patch without a real user of this function in the
kernel tree at the same time. Please submit it as part of a patch
series with that change as well.
thanks,
greg k-h
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